Pwoto-litho



No. 748,745. PATENTED JAN. 5, 1904.- F. JOSSERAND & 0. A. M. 'JAOQUET,

MACHINE FOR DRESSING SOLID OR HOLLOW BARS, RODS,.&d. grrmmnqn mum mm. 23. 1902. N0 MODEL.

4 SHEETS-SHBET 1.

n1: ncmms mars co. worounim wAsnmm-ow. o. c,

No. 748,745. PATENTEDJAN. 5, 1904. I

F. JOSSERAND & 0. A. M. JAGQUET.

MACHINE FOR DRESSING SOLID 0R HOLLOW BARS, RODS, &0'.

APrLmA'rIon'nLnn no. 23. 1902; i v 7 K0 IODEL. 4 sums-sum 2.

HF Z

- 1 VENIUHS R 15 PETERS co,vnmo-umo. wA-Mmm'ump c.

No, 748,745. PATENTED JAN. 5, 19 04. F. JOSSERAND dz 0. A. M JAGQUBT.-

I MACHINE FOR DRESSING SOLID OR HOLLOW BARS, RODS, &0.

APPLIGATION FILED DEG. 23, 1902.

N0 MODEL. 4 SHEETS-SHEET 3.

,AmmA/EY PATBNTED J'Amsj 1904. F. JOssER N & O. A. M. JAGQUET.

MLGHINEPOR DRESSING SOLID OR HOLLOW BA S, RODS, aw.

APPLICATION FILED DEQ. 23, 1902. N0 MODEL. 4 SHEETS-SHEET 4.

1: mums PETERS co wumaumov, WASHING 7 UNiTED STATES Patented January 5, 1904.

PATENT OFFICE.

FRANQOIS JOSSERAND AND CHARLES AMEDEE MAROEL JAOQUET, OF PARIS, FRANCE.

MACHINEFOR DRESSINGSQLID OR HOLLOW BARS, Roos, 800.

SPECIFICATION forming part of Letters Patent N0. 748,745, dated January 5, 1904.

Application filed December 23, 1902. Serial No. 136.881. (No model.)

To all whom it may concern.-

Be it known that we, FRANQOIS J OSSERAND and CHARLES AMr'mnE MABCEL Jncoun'r, citizens of the Republic of France, and residents of Paris, France, have invented a new and usefullmprovement in or Relating to Machines for Working Solid or Hollow Bars, Rods, and the Like, which improvement is fully set forth in the following specification.

The present invention relates to a machine for dressing solid or hollow bars, rods, and the like so constructed as to permit of the changing of the conical rollers which simultaneously efiect the advance and rotationof the work operated on to the end that said rollers may at any time be replaced by others, the conicity of which permits to the work an advance corresponding to the diameter thereof. f

In the accompanying drawings, Figure 1 is a side elevation of the machine. Fig. 2 shows,

on a larger scale, the device for dressing the work. Figs. 3 and 4 are vertical sections, and Fig. 5 is a plan view.

The dressing is effected with the aid of two conical friction-rollers and one compressing.

roller. The two conical rollers 11 and c are placed symmetrically side by side in reverse directions as regards their tapered parts. The faces of the two friction-rollers are not in the same plane, Fig. 5. The work rests on the two friction-rollers, against which it is tightly pressed by the compressing-rollers (1, Figs. 2 and 3. The surface of this roller is slightly concave, and it isplaced directly above the two friction-rollers b c in such a manner that the line formed by the contact of the roller d with the work is helicoidal. This roller is considerably longer than the friction-rollers. The two conical frictionrollers b c are fixed, respectively, to shafts b 0', provided at their extremity with toothed wheels 72 c keyed to said shafts. The toothed wheels 17 c are driven by pinions e e, mounted upon a shaft f, which is provided at its end with a large toothed bevel-wheel g, driven by a small bevel-pinion h, keyed on a shaft 1, which carries the driving-pulley of the device.

The compressing-roller d is carried by a bracket or yoke 7', secured to an adjustable support is by means of two bolts. The horizontal direction of the roller d can be varied at will, and it can be inclined to the extent of a quarter of its circumference. The bolts are fixed in the under side of the plate is, and the holes in the support j for the passage of these bolts have the form of very elongated slots to permit the regulation of the position of the roller d. This plate It is supported and guided on standards 1 of very firm construction. These two standards serve to guide the plate lc,which is suspended from screw m, which extends through a cross-bar of the frame constituting the nut of the screw. The upper end of the screw is provided with a disk which is provided with radial holes for the insertion of a lever or a rod for turning the screw.

The advance of the cylindrical work is effected in direct proportion with the conicity of the rollers with regard to the diameter of the work-t. e., the smaller the work the greater conicity of the rollers is required for the increase of the advance of this rod,

'while, on the contrary, in order to give a con- ,venient advance for dressing the surface of a large rod the conicity must be diminished. It is evident that when the diameter of the cylindrical bodies varies rollers b c of an appropriate conicity should be employed.

As the course of the work through the machine, whatever the diameter of the work may be, is always in the vertical plane which passes through the longitudinal axis of the machine, it is important that the axis of the work shall be able to be brought at will into this plane. Thus it must be possible to adjust the rollers with a view to modify the direction of their line of contact so as to bring the latter into the longitudinal axis E F, Fig. 5, of the machine. To this end the support at is provided at n with a toothed sector, whichcan be actuated by an endless screw n operated bya hand-wheel a Fig. 1. When the position of the rollers is to be adjusted, the screws n and n are loosened and the hand-wheel n is turned in the desired direction until the line of contact of the conical rollers coincides with the longitudinal axis of the machine. In order to allow of this displacement, the base of the support is provided with circular grooves (not shown in the drawings) for the guidance of the screwbolts n 71. It will be understood that at this moment the fixing-clamp should be loosened before turning the hand-wheel 0. As soon as by this displacement the contact-line of the conical rollers coincides with the longitudinal axis of the machine the support is fixed in place by tightening the screws n n and adjusting the clamp 19. The machine is then ready for a fresh operation.

What is claimed is- 1. In a machine for dressing cylindrical bodies, the combination of two conical rollers in proximity to one another and tapering in opposite directions, the axes of said rollers being arranged in planes parallel to each other and to the work, of a concave roller bearing against the work and pressing it against said conical rollers, and means for adjusting said concave roller toward the work and transversely thereto.

2. In a machine of the kind described, two conical rollers arranged in proximity to one another and tapering in opposite directions,

the axes of said rollers being arranged parallel to each other and to the work, and gear connections between said axes and a source of power, a concave roller bearing against the work to press it against said conical rollers and arranged in ahelicoidal line to said work, an adjustable support for the compressionroller, a supporting-frame carrying the above mechanism, means for adjusting the position of said frame horizontally and means for clamping the frame in its adjusted position.

3. In a machine of the kind described, two conical rollers arranged in proximity to one another and symmetrically tapering in opposite directions, toothed wheels mounted on the shafts carrying said rollers, driving-pinions meshing with said toothed wheels and mounted on a shaft connected with a suitable source of power, a concave compression-roller arranged above the conical rollers so that the line formed by the contact of this roller with the work is helicoidal in form, an adjustable support for the co mpression-roller, a supporting frame carrying the mechanism above mentioned, means for varying the horizontal position of said frame and a clamping device for securing the support in position when adjusted. I

4:. In a machine of the kind described, two conical rollers arranged in proximity to one another and symmetrically tapering in opposite directions, toothed wheels mounted on the shafts carrying said rollers, driving-pinions meshing with said toothed wheels and mounted on a suitablyarranged shaft, a bevel-wheel mounted on said shaft and meshing with a pinion mounted on a third shaft and connected with a suitable source of power, a concave compression-roller arranged above the conical rollers so that the line formed by the contact of this roller with the work is helicoidal in form, an adjustable support for the compression-roller, a supporting-frame carrying the mechanism above mentioned, a 

